<template>
	<view>
		<!-- 地址 -->
		<navigator url="/pages/address/address2?source=1" class="address-section">
			<view class="order-content">
				<text class="yticon icon-shouhuodizhi"></text>
				<view class="cen">
					<view class="top">
						<text class="name">{{addressData.name}}</text>
						<text class="mobile">{{addressData.mobile}}</text>
					</view>
					<text class="address">{{addressData.address}}</text>
				</view>
				<text class="yticon icon-you"></text>
			</view>

			<image class="a-bg" src=""></image>
		</navigator>

		<view class="goods-section">
			<view class="g-header b-b">
				<image class="logo" :src="shopInfo.logo"></image>
				<text class="name">{{shopInfo.name}}</text>
			</view>
			<!-- 商品列表 -->
			<view class="g-item" v-for="(item, index) in productList" :key="index">
				<image :src="item.image"></image>
				<view class="right">
					<text class="title clamp">{{item.title}}</text>
					<text class="spec">{{item.spec}}</text>
					<view class="price-box">
						<text class="price">￥{{item.price}}</text>
						<text class="number">x {{item.quantity}}</text>
					</view>
				</view>
			</view>
		</view>

		<!-- 优惠明细 -->
		<view class="yt-list">
			<view class="yt-list-cell b-b" @click="toggleMask('show')">
				<view class="cell-icon">
					券
				</view>
				<text class="cell-tit clamp">优惠券</text>
				<text class="cell-tip active">{{selectedCoupon ? selectedCoupon.title : '选择优惠券'}}</text>
				<text class="cell-more wanjia wanjia-gengduo-d"></text>
			</view>
			<view class="yt-list-cell b-b">
				<view class="cell-icon hb">
					减
				</view>
				<text class="cell-tit clamp">商家促销</text>
				<text class="cell-tip disabled">暂无可用优惠</text>
			</view>
		</view>
		<!-- 金额明细 -->
		<view class="yt-list">
			<view class="yt-list-cell b-b">
				<text class="cell-tit clamp">商品金额</text>
				<text class="cell-tip">￥{{totalPrice.toFixed(2)}}</text>
			</view>
			<view class="yt-list-cell b-b">
				<text class="cell-tit clamp">优惠金额</text>
				<text class="cell-tip red">-￥{{couponDiscount.toFixed(2)}}</text>
			</view>
			<view class="yt-list-cell b-b">
				<text class="cell-tit clamp">运费</text>
				<text class="cell-tip">免运费</text>
			</view>
			<view class="yt-list-cell desc-cell">
				<text class="cell-tit clamp">备注</text>
				<input class="desc" type="text" v-model="desc" placeholder="请填写备注信息" placeholder-class="placeholder" />
			</view>
		</view>
		
		<!-- 底部 -->
		<view class="footer">
			<view class="price-content">
				<text>实付款</text>
				<text class="price-tip">￥</text>
				<text class="price">{{finalPrice.toFixed(2)}}</text>
			</view>
			<text class="submit" @click="submit">提交订单</text>
		</view>
		
		<!-- 优惠券面板 -->
		<view class="mask" :class="maskState===0 ? 'none' : maskState===1 ? 'show' : ''" @click="toggleMask">
			<view class="mask-content" @click.stop.prevent="stopPrevent">
				<!-- 优惠券列表（我的优惠券-可用） -->
				<view class="coupon-item" v-for="(item,index) in couponList" :key="index" @click="selectCoupon(item)">
					<view class="con">
						<view class="left">
							<text class="title">{{item.title}}</text>
							<text class="time">有效期至 {{item.expire}}</text>
						</view>
						<view class="right">
							<text class="price">{{displayDiscount(item)}}</text>
							<text v-if="item.type==1">满{{item.basePrice}}可用</text>
							<text v-else>直减/折扣券</text>
						</view>
						<view class="circle l"></view>
						<view class="circle r"></view>
					</view>
					<text class="tips">{{item.typeStr}}</text>
				</view>
			</view>
		</view>

	</view>
</template>

<script>
	import api from '@/utils/api'
	export default {
		data() {
			return {
				maskState: 0, //优惠券面板显示状态
				desc: '', //备注
				payType: 1, //1微信 2支付宝
				couponList: [],
				selectedCoupon: null, // 选中的优惠券
				addressData: {
					name: '',
					mobile: '',
					addressName: '',
					address: '',
					area: '',
					default: false,
				},
				productList: [], // 商品列表
				totalPrice: 0, // 商品总价
				couponDiscount: 0, // 优惠券折扣金额
				finalPrice: 0, // 最终实付金额
				shopInfo: { // 店铺信息
					logo: 'http://duoduo.qibukj.cn/./Upload/Images/20190321/201903211727515.png',
					// name: '西城小店铺'
				}
			}
		},
		onLoad(option){
			// 页面加载时立即请求默认地址
			this.getDefaultAddress();
			
			// 接收并解析从product.vue传递过来的商品数据
			if(option.productData){
				try {
					const product = JSON.parse(decodeURIComponent(option.productData));
					this.productList = [product]; // 将单个商品包装成数组
					
					// 更新店铺信息，使用从商品数据中传递的店铺信息
					if (product.shopName) {
						this.shopInfo.name = product.shopName;
					}
					if (product.shopId) {
						// 可以根据shopId获取店铺logo等信息，这里暂时保持默认logo
						// this.shopInfo.logo = '根据shopId获取的logo地址';
					}
					
					this.calculateTotalPrice(); // 计算总价
					console.log('接收的商品数据:', this.productList);
					console.log('店铺信息:', this.shopInfo);
				} catch (error) {
					console.error('解析商品数据失败:', error);
				}
			}
		},
		methods: {
			
			//显示默认地址信息
			async getDefaultAddress() {
				api.defaultAddress().then(res => {
					if (res.code == 200) {
						// 1. 获取后端原始地址数据
						const backData = res.data
						// 2. 拼接省、市、区为完整地址前缀
						const fullArea = `${backData.province}${backData.city}${backData.area}`
						// 3. 赋值给addressData，其中address字段拼接“省市区+详细地址”
						this.addressData = {
							...backData, // 继承后端返回的所有字段（如addrId、mobile等）
							name: backData.consignee, // 后端用consignee表示收货人姓名，映射到页面的name字段
							address: fullArea + backData.addr, // 完整地址：省+市+区+详细地址（addr是后端的详细地址字段）
							default: backData.isDefault === 1 // 后端isDefault=1表示默认地址，映射为布尔值
						}
						// 打印地址数据，确认是否正确获取
						console.log('默认地址数据：', this.addressData)
					}
				})
			},
			//显示优惠券面板
			toggleMask(type){
				let timer = type === 'show' ? 10 : 300;
				let	state = type === 'show' ? 1 : 0;
				this.maskState = 2;
				setTimeout(()=>{
					this.maskState = state;
				}, timer)
				// 打开时加载我的可用优惠券
				if (type === 'show') {
					this.loadMyAvailableCoupons()
				}
			},
			// 查询“我的优惠券”并筛选可用
			loadMyAvailableCoupons(){
				api.mineCoupons().then(res => {
					const list = Array.isArray(res.data) ? res.data : []
					// 仅保留生效中的优惠券
					this.couponList = list.filter(item => item.status === 'active')
				})
			},
			// 展示金额或折扣
			displayDiscount(item){
				if (item.type == 3) return item.discount + '折'
				return item.discount
			},
			
			// 计算总价
			calculateTotalPrice() {
				this.totalPrice = this.productList.reduce((total, item) => {
					return total + (parseFloat(item.price) * item.quantity);
				}, 0);
				this.calculateFinalPrice(); // 重新计算最终实付金额
			},
			
			// 计算最终实付金额
			calculateFinalPrice() {
				if (this.selectedCoupon) {
					// 根据优惠券类型计算折扣金额
					if (this.selectedCoupon.type === 1) {
						// 满减券
						if (this.totalPrice >= this.selectedCoupon.basePrice) {
							this.couponDiscount = this.selectedCoupon.discount;
						} else {
							// 未达到使用门槛
							this.couponDiscount = 0;
						}
					} else if (this.selectedCoupon.type === 3) {
						// 折扣券
						this.couponDiscount = this.totalPrice * (1 - this.selectedCoupon.discount / 10);
					} else {
						// 直减券
						this.couponDiscount = this.selectedCoupon.discount;
					}
				} else {
					this.couponDiscount = 0;
				}
				
				// 确保折扣金额不超过总价
				this.couponDiscount = Math.min(this.couponDiscount, this.totalPrice);
				// 计算最终实付金额
				this.finalPrice = Math.max(0, this.totalPrice - this.couponDiscount);
			},
			
			// 选择优惠券
			selectCoupon(coupon) {
				this.selectedCoupon = coupon;
				this.calculateFinalPrice(); // 重新计算最终实付金额
				this.toggleMask(); // 关闭优惠券面板
			},
			numberChange(data) {
				this.number = data.number;
			},
			changePayType(type){
				this.payType = type;
			},
			submit(){
				// 构建订单数据
				const orderData = {
					addressId: this.addressData.addrId, // 收货地址ID
					consignee: this.addressData.name, // 收货人姓名
					mobile: this.addressData.mobile, // 联系电话
					address: this.addressData.address, // 收货地址
					items: this.productList.map(item => ({
						productId: item.id, // 商品ID
						productName: item.title, // 商品名称
						specs: item.spec, // 商品规格
						price: item.price, // 商品单价
						number: item.quantity, // 购买数量
						// 添加缺失的字段
						shopId: item.shopId || 1, // 店铺ID
						skuId: item.skuId || item.id, // SKU ID
						spuId: item.spuId || item.id, // SPU ID
						image: item.image || '', // 商品图片
						shopName: item.shopName || '默认店铺' // 店铺名称
					})),
					couponId: this.selectedCoupon ? this.selectedCoupon.id : null, // 优惠券ID
					totalPrice: this.totalPrice, // 商品总价
					discountPrice: this.couponDiscount, // 优惠金额
					actualPrice: this.finalPrice, // 实付金额
					remark: this.desc, // 订单备注
					payType: this.payType // 支付方式
				};
				
				// 向后端发送创建订单请求
				uni.showLoading({
					title: '创建订单中...'
				});
				
                api.createOrder(orderData).then(res => {
					uni.hideLoading();
					if (res.code === 200) {
                        // 创建订单成功后，跳转到支付页面
                        const orderId = String(res.data);
                        const orderInfo = {
                            orderId: orderId,
                            payAmount: this.finalPrice,
                            productList: this.productList,
                            shopInfo: this.shopInfo,
                            createTime: new Date().toISOString() // 记录订单创建时间
                        };
                        // 跳转到支付页面，传递订单信息
                        uni.redirectTo({
                            url: `/pages/money/pay?orderInfo=${encodeURIComponent(JSON.stringify(orderInfo))}`
                        });
					} else {
						// 订单创建失败
						uni.showToast({
							title: res.msg || '订单创建失败',
							icon: 'none'
						});
					}
				}).catch(err => {
					uni.hideLoading();
					uni.showToast({
						title: '网络错误，请稍后重试',
						icon: 'none'
					});
					console.error('创建订单失败:', err);
				});
			},
			stopPrevent(){}
		}
	}
</script>

<style lang="scss">
	page {
		background: $page-color-base;
		padding-bottom: 100upx;
	}

	.address-section {
		padding: 30upx 0;
		background: #fff;
		position: relative;

		.order-content {
			display: flex;
			align-items: center;
		}

		.icon-shouhuodizhi {
			flex-shrink: 0;
			display: flex;
			align-items: center;
			justify-content: center;
			width: 90upx;
			color: #888;
			font-size: 44upx;
		}

		.cen {
			display: flex;
			flex-direction: column;
			flex: 1;
			font-size: 28upx;
			color: $font-color-dark;
		}

		.name {
			font-size: 34upx;
			margin-right: 24upx;
		}

		.address {
			margin-top: 16upx;
			margin-right: 20upx;
			color: $font-color-light;
		}

		.icon-you {
			font-size: 32upx;
			color: $font-color-light;
			margin-right: 30upx;
		}

		.a-bg {
			position: absolute;
			left: 0;
			bottom: 0;
			display: block;
			width: 100%;
			height: 5upx;
		}
	}

	.goods-section {
		margin-top: 16upx;
		background: #fff;
		padding-bottom: 1px;

		.g-header {
			display: flex;
			align-items: center;
			height: 84upx;
			padding: 0 30upx;
			position: relative;
		}

		.logo {
			display: block;
			width: 50upx;
			height: 50upx;
			border-radius: 100px;
		}

		.name {
			font-size: 30upx;
			color: $font-color-base;
			margin-left: 24upx;
		}

		.g-item {
			display: flex;
			margin: 20upx 30upx;

			image {
				flex-shrink: 0;
				display: block;
				width: 140upx;
				height: 140upx;
				border-radius: 4upx;
			}

			.right {
				flex: 1;
				padding-left: 24upx;
				overflow: hidden;
			}

			.title {
				font-size: 30upx;
				color: $font-color-dark;
			}

			.spec {
				font-size: 26upx;
				color: $font-color-light;
			}

			.price-box {
				display: flex;
				align-items: center;
				font-size: 32upx;
				color: $font-color-dark;
				padding-top: 10upx;

				.price {
					margin-bottom: 4upx;
				}
				.number{
					font-size: 26upx;
					color: $font-color-base;
					margin-left: 20upx;
				}
			}

			.step-box {
				position: relative;
			}
		}
	}
	.yt-list {
		margin-top: 16upx;
		background: #fff;
	}

	.yt-list-cell {
		display: flex;
		align-items: center;
		padding: 10upx 30upx 10upx 40upx;
		line-height: 70upx;
		position: relative;

		&.cell-hover {
			background: #fafafa;
		}

		&.b-b:after {
			left: 30upx;
		}

		.cell-icon {
			height: 32upx;
			width: 32upx;
			font-size: 22upx;
			color: #fff;
			text-align: center;
			line-height: 32upx;
			background: #f85e52;
			border-radius: 4upx;
			margin-right: 12upx;

			&.hb {
				background: #ffaa0e;
			}

			&.lpk {
				background: #3ab54a;
			}

		}

		.cell-more {
			align-self: center;
			font-size: 24upx;
			color: $font-color-light;
			margin-left: 8upx;
			margin-right: -10upx;
		}

		.cell-tit {
			flex: 1;
			font-size: 26upx;
			color: $font-color-light;
			margin-right: 10upx;
		}

		.cell-tip {
			font-size: 26upx;
			color: $font-color-dark;

			&.disabled {
				color: $font-color-light;
			}

			&.active {
				color: $base-color;
			}
			&.red{
				color: $base-color;
			}
		}

		&.desc-cell {
			.cell-tit {
				max-width: 90upx;
			}
		}

		.desc {
			flex: 1;
			font-size: $font-base;
			color: $font-color-dark;
		}
	}
	
	/* 支付列表 */
	.pay-list{
		padding-left: 40upx;
		margin-top: 16upx;
		background: #fff;
		.pay-item{
			display: flex;
			align-items: center;
			padding-right: 20upx;
			line-height: 1;
			height: 110upx;	
			position: relative;
		}
		.icon-weixinzhifu{
			width: 80upx;
			font-size: 40upx;
			color: #6BCC03;
		}
		.icon-alipay{
			width: 80upx;
			font-size: 40upx;
			color: #06B4FD;
		}
		.icon-xuanzhong2{
			display: flex;
			align-items: center;
			justify-content: center;
			width: 60upx;
			height: 60upx;
			font-size: 40upx;
			color: $base-color;
		}
		.tit{
			font-size: 32upx;
			color: $font-color-dark;
			flex: 1;
		}
	}
	
	.footer{
		position: fixed;
		left: 0;
		bottom: 0;
		z-index: 995;
		display: flex;
		align-items: center;
		width: 100%;
		height: 90upx;
		justify-content: space-between;
		font-size: 30upx;
		background-color: #fff;
		z-index: 998;
		color: $font-color-base;
		box-shadow: 0 -1px 5px rgba(0,0,0,.1);
		.price-content{
			padding-left: 30upx;
		}
		.price-tip{
			color: $base-color;
			margin-left: 8upx;
		}
		.price{
			font-size: 36upx;
			color: $base-color;
		}
		.submit{
			display:flex;
			align-items:center;
			justify-content: center;
			width: 280upx;
			height: 100%;
			color: #fff;
			font-size: 32upx;
			background-color: $base-color;
		}
	}
	
	/* 优惠券面板 */
	.mask{
		display: flex;
		align-items: flex-end;
		position: fixed;
		left: 0;
		top: var(--window-top);
		bottom: 0;
		width: 100%;
		background: rgba(0,0,0,0);
		z-index: 9995;
		transition: .3s;
		
		.mask-content{
			width: 100%;
			min-height: 30vh;
			max-height: 70vh;
			background: #f3f3f3;
			transform: translateY(100%);
			transition: .3s;
			overflow-y:scroll;
		}
		&.none{
			display: none;
		}
		&.show{
			background: rgba(0,0,0,.4);
			
			.mask-content{
				transform: translateY(0);
			}
		}
	}

	/* 优惠券列表 */
	.coupon-item{
		display: flex;
		flex-direction: column;
		margin: 20upx 24upx;
		background: #fff;
		.con{
			display: flex;
			align-items: center;
			position: relative;
			height: 120upx;
			padding: 0 30upx;
			&:after{
				position: absolute;
				left: 0;
				bottom: 0;
				content: '';
				width: 100%;
				height: 0;
				border-bottom: 1px dashed #f3f3f3;
				transform: scaleY(50%);
			}
		}
		.left{
			display: flex;
			flex-direction: column;
			justify-content: center;
			flex: 1;
			overflow: hidden;
			height: 100upx;
		}
		.title{
			font-size: 32upx;
			color: $font-color-dark;
			margin-bottom: 10upx;
		}
		.time{
			font-size: 24upx;
			color: $font-color-light;
		}
		.right{
			display: flex;
			flex-direction: column;
			justify-content: center;
			align-items: center;
			font-size: 26upx;
			color: $font-color-base;
			height: 100upx;
		}
		.price{
			font-size: 44upx;
			color: $base-color;
			&:before{
				content: '￥';
				font-size: 34upx;
			}
		}
		.tips{
			font-size: 24upx;
			color: $font-color-light;
			line-height: 60upx;
			padding-left: 30upx;
		}
		.circle{
			position: absolute;
			left: -6upx;
			bottom: -10upx;
			z-index: 10;
			width: 20upx;
			height: 20upx;
			background: #f3f3f3;
			border-radius: 100px;
			&.r{
				left: auto;
				right: -6upx;
			}
		}
	}

</style>
